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Letters : . . .

From
Sue Mayer

Buxton, Derbyshire

Clearly, the widespread use of Bt in crops has a damaging impact on insect
species which rely upon them as a food source. Populations of birds, for
example, may then suffer as their food species decline. Yet the regulations
which are supposed to ensure the environmental safety of genetically modified
crops do not evaluate this possibility.

Each crop is assessed on a case-by-case basis with no consideration of the
cumulative impact of an array of crops containing the Bt gene. While one Bt crop
alone may seem innocuous, a whole array of crops with inbuilt insecticide is a …